SI8645BT-AS

Digital Isolators Overview

The SI8645BT-AS is a four-channel unidirectional digital isolator from the Si864x series, manufactured by Skyworks Solutions Inc. It features capacitive coupling technology with a rated insulation voltage of 5000 Vrms and supports data rates up to 150 Mb/s. The device operates within a supply voltage range of 2.5 V to 5.5 V, drawing a typical operating current of 6.1 mA. Key electrical characteristics include an 8 ns propagation delay, 4 ns rise/fall times, and a pulse width of 5 ns. It is housed in a 16-pin SOIC package and is qualified for automotive applications under AEC-Q100 standards, functioning reliably between -40°C and +125°C.

Digital Isolators Feature Summary

• Provides high-voltage isolation via capacitive coupling technology
• Supports high-speed data transmission at 150 Mb/s
• Designed for automotive reliability with AEC-Q100 qualification
• Offers low power consumption suitable for energy-efficient systems

Digital Isolators Applications

• Automotive electronic control units (ECUs)
• Industrial communication interfaces
• Power conversion systems
• Medical equipment signal isolation

Digital Isolators Procurement Notes

Verify the specific suffix 'AS' against official Skyworks documentation to confirm package type and tape/reel specifications. Ensure compatibility with required insulation ratings and temperature ranges for the target application environment. Cross-reference part numbers carefully as minor suffix variations may indicate different packaging or testing criteria.

Digital Isolators Selection Notes

Select this component when high isolation voltage and automotive qualification are required. Compare channel count and directionality against system interface needs. Evaluate power budget constraints given the 6.1 mA operating current. Confirm that the SOIC-16 footprint fits the PCB layout requirements.

Digital Isolators Part Context

This part belongs to the Si864x family of digital isolators, which utilizes Skyworks' proprietary iCoupler technology. The family offers various isolation levels and channel configurations. The SI8645BT-AS specifically targets applications requiring robust automotive-grade performance with high-speed data integrity.

Digital Isolators Replacement Considerations

Check Skyworks datasheets for direct pin-compatible alternatives within the Si864x series. Verify if other suffixes like BD or BC offer identical electrical performance with different packaging options.